Remote code execution in Microsoft Internet Explorer
| Risk | Critical |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2018-8373 |
| CWE-ID | CWE-416 |
| Exploitation vector | Network |
| Public exploit | This vulnerability is being exploited in the wild. |
| Vulnerable software Subscribe |
Microsoft Internet Explorer Client/Desktop applications / Web browsers |
| Vendor | Microsoft |
Security Bulletin
This security bulletin contains one critical risk vulnerability.
1) Use-after-free
EUVDB-ID: #VU14368
Risk: Critical
CVSSv3.1: 9.2 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]
CVE-ID: CVE-2018-8373
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a use-after-free error in VBScript when the scripting engine handles objects in memory in Internet Explorer. A remote unauthenticated attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and execute arbitrary code with elevated privileges.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Note: The vulnerability has been exploited in the wild.
MitigationInstall updates from vendor's website.
Vulnerable software versionsMicrosoft Internet Explorer: 9 - 11
External linkshttp://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8373
http://blog.trendmicro.com/trendlabs-security-intelligence/use-after-free-uaf-vulnerability-cve-201...
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to trick the victim to visit a specially crafted website.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.
